Abstract
We demonstrate that a [Co(bpy)3]2+/3+ (PF6)2/3 redox couple is an effective strategy for cost-effective and highly efficient dye-sensitized solar cells (DSSCs). Their high transmittance and large complex size make cobalt redox couples advantageous in back-illuminated devices. Furthermore, the use of thin TiO2 films, together with the naturally formed blocking layer at the outermost surface of Ti substrate, effectively alleviate the drawbacks of cobalt electrolyte. By virtue of these simultaneous effects, we achieve a highly promising power conversion efficiency of 7.12%.
| Original language | English |
|---|---|
| Pages (from-to) | 32-37 |
| Number of pages | 6 |
| Journal | Journal of Power Sources |
| Volume | 278 |
| DOIs | |
| Publication status | Published - 2015 Mar 15 |
| Externally published | Yes |
Keywords
- Back illumination
- Cobalt electrolyte
- Dye-sensitized solar cells (DSSCs)
- Metal foil
- Organic dye
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
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Cite this
Kim, M., Yun, H. G., Jang, L. W., Jeon, D. W., Kang, M. G., Yoon, J. H., Kim, J. M., Park, J. H., Lee, I-H., & Kim, J. J. (2015). Promising efficiency enhancement in cobalt redox couple-based back-illuminated dye-sensitized solar cells with titanium foil substrate. Journal of Power Sources, 278, 32-37. https://doi.org/10.1016/j.jpowsour.2014.12.057